This is a very simple arduino project where a led is turned on by setting the pin 13 as output, then write it with a high value, in our case that means that pin 13 will deliver 5 volts. Advertisement ...

After successfully building the circuit, we took the project one step further by incorporating an Atmel ATtiny13 microcontroller. The code switches the LEDs on and off randomly for a flickering ...

The project uses a 5W blue LED, the aforementioned bulb, and a 6V battery pack loaded with 3 AAA batteries. The battery pack and the lights are all attached to a small section of perforated board.

This is a simple blinking led circuit powered from 220V that can be used to mark special places or as voltage indicator. The voltage from the mains charges the capacitor through R1 resistor and D1 ...

This easy-to-construct circuit causes a standard LED bulb to glow when infrared is detected by an infrared photo-diode or phototransistor. The third, remaining part, is a common 2N2222 (or ...

Chibitronics combines familiar adhesive stickers with bits of LEDs, sensor circuits, and even a programmable microcontroller, to create a playful set that educates while adding some flash to one ...